#!/usr/bin/python
a = [1, 2, 3, 4, 5] #sequence a
b = range(1,5) #sequence b = [1, 2, 3, 4]
c = ['a','b','c','d'] #sequence c
if __name__ == '__main__':  #like main function
	print '===========1==========='
	suma = 0
	for x in a:
		suma = suma + x
	print suma
	print '===========2==========='
	sumb = 0
	for y in b:
		sumb = sumb + y
	print sumb
	print '===========3==========='
	for i in ['a', 'b', 'c']:
		print i
	print '===========4==========='
	for i in c:
		print i
	print '===========5==========='
	s = ''
	for i in c:
		s = s +i
	print s
	print '===========6==========='
	ii = 1
	while ii in a:
		#str() will change number to str
		print 'hellow' + str(ii) 
		ii = ii + 1
